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20314447 = 432112239
BaseRepresentation
bin100110101111…
…1100101001111
31102020002011221
41031133211033
520200030242
62003224211
7334445536
oct115374517
942202157
1020314447
11105155aa
126978067
1342935aa
1429ab31d
151bb4167
hex135f94f

20314447 has 8 divisors (see below), whose sum is σ = 20894720. Its totient is φ = 19739160.

The previous prime is 20314429. The next prime is 20314453. The reversal of 20314447 is 74441302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20314447 - 27 = 20314319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20314417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7954 + ... + 10192.

It is an arithmetic number, because the mean of its divisors is an integer number (2611840).

Almost surely, 220314447 is an apocalyptic number.

20314447 is a deficient number, since it is larger than the sum of its proper divisors (580273).

20314447 is a wasteful number, since it uses less digits than its factorization.

20314447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 20314447 is about 4507.1550894106. The cubic root of 20314447 is about 272.8569381973.

Adding to 20314447 its reverse (74441302), we get a palindrome (94755749).

The spelling of 20314447 in words is "twenty million, three hundred fourteen thousand, four hundred forty-seven".

Divisors: 1 43 211 2239 9073 96277 472429 20314447